Os Gemeos (pronounced "ose zhe'-mee-ose.") are two artists from Sao Paulo, Brazil. Born in 1974, Otavio and Gustavo Pandolfo are identical twin brothers whose pseudonym Os Gemeos translates to "the twins" in Portuguese. In addition to painting, sculpture and installation work, Os Gemeos has gained international notoriety for their incredible works created on the streets of Sao Paulo.

Os Gemeos’s particular process has led to a unique vernacular very specific to Sao Paulo. Most works were created using latex house paint, rollers and spray for the details. The artists championed this new style and mixed different influences from the street to create their own distinctly recognizable aesthetic. Improvisation played a big role, as the work was shaped and formulated according to their surrounding environment.

In 1993, Os Gemeos met Barry McGee, who was in Sao Paulo on a painting fellowship. They became fast friends and immediately collaborated on works around the city. This experience opened them up to a wealth of information and mutual influence. Since then, Os Gemeos produced works for galleries and museums. Os Gemeos has exhibited within Sao Paulo and Latin America as well as in San Francisco, Los Angeles, Cuba, Australia and throughout Europe.

Os Gemeos divided their painting mode in two by painting together, and started and finished each other’s works. The works conveyed their vision of day-to-day life, simple scenes that were sensually rich. The artists were interested in what was inside of people beneath the surface. Characters were often rendered smelling the insides of their clothing as if to say, “it is only here, behind the clothing that a person’s true essence can be found.” They were influenced by the folklore and people of Brazil and created characters that were reflections of both indigenous customs and the urban sprawl that mimicked the contradictions of the world around them. However in their words, “we only report scenes from a magic, love, hate, and real place that live inside us, a real dream, the scene of our own universe, a place called "Tritrez."